Concrete-fence-post mold.



B. F. CRISENBERRY.

CONCRETE FENCE POST MOLD.

APPLICATION FILED SEPT-20,1915.

Patented June 13, 1916.

% j ,Z L75 Inventor 4 Witnesses .&

Attorneys BENJAlllil yi' 'F. CR-ISENBERRY, O INDIANAPOLIS, INDIANA, ASSIGNOR TO CENTURY POST C0,, 0F INDIANAPOLIS, INDIANA.

GO NCRETE-FENGE-POST MOLD.

Specification of Letters Patent. Patgntgd J 13, 1916.

Application filed September 29, 1915. Serial No. 51,696.

b all whom it may concern Be it known that I, BENJAMIN F. Cnisnivrnnnv, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Concretc-Fence-Post Mold, of which the following is a specification.

The present invention appertains to molds, and relates more particularly to a mold for forming concrete fence posts.

It is the object of the invention to provide aconcrete fence post mold having novel and improved means whereby a plurality of reinforcing wires can be held taut within the mold while the concrete is being poured therein and until the concrete hardens, whereby the completed post will have embedded therein, aplurality of reinforcing wires under strain tending to draw the ends of the posts together, and thereby preventing the posts from breaking easily.

It is the object of the invention to provide a simple and inexpensive yet efficient and practical 1 means for applyinga plurality of wires in a stretched condition within the mold. 1

With the foregoing and other objects in view which will appear asv the description proceeds the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and: claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein Figure 1 is a perspective view of the mold. Fig. 2 is a longitudinal section thereof on an enlarged scale, portions being broken away. Fig. 3 is an enlarged elevation of one of the larger wire gripping plates. Fig. 4 is an enlarged perspective view of one of the gripping cams or elements. Fig. 5 is an enlarged sectional detail taken on the line 5-5 of Fig. 3. Fig. 6 is a cross section of a completed post illus trating how the fence and securing wires are applied thereto. Fig. 7 is a view similar to Fig. 6 illustrating the securing wire wrapped around the fence wire.

The mold embodies a plurality of transverse sills 1 laid upon the ground or other tudinal boards 3 are seton edge upon the,

sills 1 along the edges of the bottom boards 2, and wedges .i are driven between the remote boards 3 and the upstanding lugs or blocks 5 with which theends of the sills 1 are provided, whereby the boards 2 and 3 will be clamped tightly together. Transverse end boards 6 are set on edge upon the bottom boards 2 and rest against the ends of the boards 3. The boards 2 and 3 are tapered from one end to the other, so that tapered fence posts can be molded, as will be apparent, and the boards 6 at the opposite ends are of different heights according to the heights of the opposite ends of the boards 3. The boards 3 are provided with alining apertures 7 through which polish wires 7* are inserted, whereby said wires will provide passages through the fence posts transversely thereof. The wires 7* can be withdrawn after the concrete has har dened, to leave the passages or bores in the posts. I

The invention includes means for holding stretched wires within the several molds provided between the boards 3, and since the v said wire holding means embodies a pair of star-shaped plates 8 upon the outer sides of the boards or end members 6 of the mold, one member 8 being larger than the other and being disposed at the larger end of the mold, while the smaller member 8 is disposed at the smaller end of the mold. Each member 8 has an open radial slot 9 in each arm thereof, and a gripping cam or element 10 is pivoted within each slot 9, by means of a pin or pivot element 11 engaged through the respective arm of the plate 8 and the cam 10. The cam 10 has an arm 12 projecting outwardly out of the slot 9, and said arm is provided with a rounded knob or finger piece 13. The cam 10 is provided with four spurs or teeth 14. arranged in two pairs. and provided with V-shaped notches therebetween, said spurs being of pyramidal form. The spurs 14E cooperate with the end wall of the slot 9 for gripping the twisted screw'16 is then rotated to bring'the Wiresthe larger star plate 8 andiis adapted to bear against the respective end member or board 6 of the mold. V In use, after the mold isset up as illustrated in'Fig. 1, the wires 15 of each mold are inserted through suitable apertures pro- 1 vided in the end members 6, there being one,-

twistedlwire 15 for each corner of the post. -E.ach of the twisted Wires 15 embodies a plurality of strands twisted together and the protruding terminals of the wires 15 are passed through theslots 90f the plates. 8. The cams 10 of the plates are then swung so that the respective terminals of the Wires are gripped tightly between the spurs 14 and the endiwalls of the slots 9,and the under the desired tension. When the wires are stretched, they hold theboards 6 of the mold against the end of the boards 3, and

'the wires will be held in taut or stretched condition longitudinally within the mold. The wires 15 diverge similar 'tothe boards 2 and 3, whereby said wires will be-embedded within the post at practically equal depths from the sides thereof'throughout the length of the post. The concrete is now poured into the mold, and due to the fact I mold may then be collapsed, to release the completed fence post, the polishwires 7 a bep i sages 18 throughthe post 17, as indicated 1 wires are twisted, and said wires being nortastes of "this patent maybe obtained for that the wires are instretched condition, said wires will not be bent out of proper position. I When the concrete sets or hardensr the wires will be embedded therein, and the ing "withdrawn to provide transverse pasin Figs. (Sand 7. The protruding terminals of the wires 15 can be clipped or cut olt if they are not'wanted; The wires 15 will be firmly embeddedin the concrete, since said mally under tension, will effectively prevent the posts from breaking.

The passages 18 are arranged adjacent a a pair of the wires 15 and are useful'for attaching the fence wires to the posts. 1 Thus, a wire 19 can be passed through each passage 18, and its terminals bent angularly, as a at 20, so that the fence-wire crosses the gripping cams pivoted within said sl'otstorl.

grlpping the wires," and means carried by one late for movin it aw'a from the re- :-a y I, V,

spective end of the mold.

' 2. A mold, star platesupofi the outer sides of the ends thereof and having open radial slots in the r'arms, gripping cams wlthin said slots; plvot elements engaged through .said arms and cams, the camshav ing outwardly promoting:- arms, wires extending longitudinally through the mold and through said'slots and adapted to be gripped between the'end walls of said slots and the cams, and a screw threaded through i the center of one ofsaid plates to bear against the respective end of the mold.

In testimony that I claim the foregoing as my own, I havehereto alfixed my signa ture in the presence of two witnesses;

Y 7 BENJAMIN F. ORISENBERRY.

Witnesses:

' NOAH ELMonE, V THos; F. FLY. I

ve cents each, by addressing the Commisibnerlof l'atentn,

wa'shlh'gtonmci" 7 

